Its not the hardest science in the land, and sure I agree its actually statistics which is being utilized to quantify their results, so you could say that the harder science is the statistics but this is a bit of an strange take on things.Are you saying Economics is a science? Just because it has trends that can be analyzed and metrics that are statistically powerful doesn't make it a science. You can do all the same things with horse racing or any other kind of sports handicapping and be successful if you know the secret recipe, doesn't make it science. The actual science is Statistics.
I mean most of chemistry is based on calculus and algebra with some trigonometry thrown in the mix. So its not a science because its not mathematics? I don't know if I agree with that. What makes something a science? Well, it must be analytical, it must focus on quantifiable, repeatable results, hypothesis testing, etc. By all those metrics economics is a science, but definitely its not as hard a science as chemistry.
Anyway
Economics - Definition and More from the Free Merriam-Webster Dictionary
eco?nom?ics noun plural but singular or plural in construction \?e-k?-'n?-miks, ?e-k?-\
: a science concerned with the process or system by which goods and services are produced, sold, and bought
: the part of something that relates to money
But yes, economics relies on statistical methodology, so in that regard, on a scale from least scientific to most, statistics comes further towards the most scientific than economics does.